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Hi friends I am novice in the field. Please clear my few doubts!!! 1.Whats difference between 'char' and 'varchar'. Which one should be prefered when?? 2. Difference between float,decimal and real?? If any one could provide me link to any tutorial or free e-book where i can get detail...

Hi Friends I m new in this field.Could you please clear some of my doubts. 1. I heard it is better to use coing mode rather than design mode to create or insert some contoles LIKE: a) creating connection string, data adapter , dataset through coding instead of wizard. b)creating...